Coil winding machine



July 6, 1937.

E. W. COLLINS con.. wINDING MACHINE Filed Dec. 9, 1935 '7 Sheets-Sheetvv l ATTORNEY/d July 6, 1937. Y E. w. coLLlNs 2,085,957

COIL WINDING MACHINE 245 mvEN-roR Ezwara W50/fiks July 6, 1937. E. w. coLLlNs' i COIL WINDING MACHINE Filed Dec. 9, 1955 7 Sheets-Sheet' 4 INVENTOR Edward W50/rhs BY y mm/ ...r- 5;

QJ ATTORNEY,

July 6, 19-37.

E. W. COLLINS COIL wINDING MACHINE Filed Dec. 9, 1955` 7 Sheets-Shee'l'I 5 July 6, 1937. E. w. coLLlNs COIL WINDING MACHIN Filed Deo. 9, 1955 '7 Sheets-Sheet 6 INVENTOR Edward 14./[0//1275 July 6, 1937- E. w. coLLlNs l 2,085,957

C OIL WINDING- MACHINE Filed Dec. 9, 1955 7 sheets-#sheet 'r INVENTOR Edward W50/[i175 i, ATTORNEY l,

Patented July 6, 1937 UNiTEo STATES PAT-ENT .OFFICE COIL WINDING MACHINE Edward W. Collins, Anderson, Ind., assignor to General Motors Corporation, Detroit, Mich., a corporation of Delaware Application December 9, '1935,'seria1 No. 53,439 17 claims. (c1. 14o-92.2)

operation, and (c) a restart of the machine.

The operator of the machine is instructed t manipulate the foot pedal during rest periods of the machine only. However, there being no provision to guard against accidental manipulation of the foot pedal lduring a winding operation serious damage to the machine or at least a troublesome interruption of a winding operation may result therefrom.

Therefore, it is one of the objects of thevpresent invention to guard against accidental ma-Vv nipulation of the foot pedal during operation of the machine. 2'5 It is another object of the present invention to construct the foot pedal operated structure more simple and more rugged than in my prior machine.

Further objects and advantages of the present invention will be apparent from the following description, reference being had to the accompanying drawings wherein a preferred embodiment of the present invention isl clearly shown.

In the drawings: 4 Fig. 1 is a perspective View of a machine embodying the present invention.

Figs. 2.and 2a together represent a plan view of the machine.

Figs. 3 and 3d together represent a front elevation of the machine as viewed in the direction' of arrow in Fig. 1.

Fig. 4 is a perspective view of certain structure of themachine and is viewed in the direction of arrow in Fig. 3a.

Fig. 5 is an enlarged fragmentaryview of that part Vof the winding form which is surrounded by the dot-and-dash lines 20 in Fig. 2a..

Figs. 6 and 'l are perspective views of the cutting and bending blades of the machine. Fig. S is Va fragmentary front elevation of these same blades.

Fig. y9 is a fragmentary section takenvon the line v9--9 ofFig. 5.

Y Fig. 10 is arvfragn'ientaryv section taken on the` ulirielll--lll ofFig 2a.

Fig. 11 is a fragmentary section taken on the line lI l-II of Fig. 3a.

Fig. 1 2 is a section taken on the line l2-.l2 of' Fig. 2a.

Fig. 13 is a fragmentary section taken on the 5 line Vl3--I3 of Fig. 12.

Fig. 14 is a fragmentary section similar to Fig.

12, showing, however, certain machine elements in a different position of operation.

Fig. 15 is a fragmentary section taken on the 10 line l5--l5 of Fig. 12. 1

The instant machine may for sake of better understanding be divided into several sub-structures, to wit:

A rotatable and separable winding form A, 15 a wire shifting device B, a wire anchoring andv coil releasing deviceC anda machinestopping and restarting device D. These devices shall now be described in the just mentioned order.

Rotatable and separable winding form A ,20

bearings 34 for a power driven shaft 36 Whiclr25v carries at one end a winding member 38 and intermediateits two bearings `34 a longitudinally immovable friction `disc 40 (see Fig. 3) Suitably `splinedto shaft A35 is another friction disc 42, Y and journalled on the same shaft intermediate 30 both friction `discs 45, 42jis a ,pulleyrl which is driven from any suitable power source (not shown) by means of a belt 45. Interposed between one of the bearings 34 and frictionbdisc 42 is -a compressed spring 48 which normally 35 urges disc-2 into ydriving frictional engagement with pulley 44 and the latter into frictional driving engagement with disc 4i). Journalled and f slidable inv-abearing `50 on top one of the uprights 32 is a stub shaft 52 which is in axial align- 40 y mentwith shaft 3 6 and carries a winding member 54, adapted to cooperate with its companion member ,38 to complete the winding form YA which provides a winding groove 56. This winding groove may be of any desired shape or form 45 Vto accommodate any article to be woundV therein.

Stub shaft 52 with itswinding member A54 may be `witlfidrawnfrom its relatively stationary companionmember V38 Yto permit'the removal of a wound coil from the winding groove 56. To'this 50, end `joints 58 connect kthe stub shaft 52 with links Eiland 62 at'. Link 62 is pivotally mountedrat 3,6 on one of the uprights v32,. Link 60 is Vpivotally connected rat 68 to a bar 'l0Y which is of a link '|4. Foot pedal 'I2 is pivotally mounted at 'i6 on a bracket 18, suitably mounted on one of the posts 88 of the work bench or support 82 which carries the winding machine. A tension spring normally urges link 60 into the position shown in Fig. 3a in which the links 58, 52 are in longitudinal alignment and member 54 is in cooperative engagement with its companion member 38. The winding members 38, 54 are drivingly connected with each other when they are in cooperative engagement. Such driving connection may be established by the provision of suitable ldriving lugs (not shown) on both winding members which drivingly engage each other when said winding members are in cooperative engagement with each other. The joints or links 58 are pivotally connected at 36 to a collar 88 which is journalled on stub shaft 52 and prevented from sliding therefrom by a shoulder 82. Stub shaft 52 with the winding part 54 may therefore rotate relative to the collar 8S whenever the machine is in operation. Stub shaft 52 also carries a suitable number of washers 94 against which rests a thrust bearing 96, engaged by the collar 88. In this way the tension spring 84 has not only a tendency to return winding member 54 into cooperative engagement with its companion member 38 but also yieldingly to retain the former in cooperative engagement with the latter as can be readily understood. It may be stated in advance that manipulation of the pedal '12 into the dot-and-dash position in Fig. 3a causes movement of bar 66 in the direction of arrow 98 and consequently results in a retraction of winding member 54 from its relatively stationary companion member 38 so as t0 permit the removal of a wound coil |66 from the winding groove 5S.

Wire shifting device B Referring more particularly to Figs. 2, 2a, 3a, 10, and 1 1, a shaft |02 is journaled in suitable bearings |64 on the machine base 36. This shaft is spaced from, and parallel to, shaft 36 and carries near one end two identical ratchet discs |66 which are engaged by pawls |08, mounted on eccentrics ||il and 2 on shaft 36. A stud lili, carried by suitable lugs ||6 of a bearing 34, holds leaf springs ||8 in yielding engagement with the pawls |68, thereby normally retaining the latter in engagement with their respective ratchet discs |66. The eccentrics ||6 which have the same throw, are displaced relative to each other so that during rotation of shaft 36 one of the pawls indexes shaft |62 while the other pawl rides idly over its respective ratchet disc into position for the next indexingoperation, and vice versa. It can now be understood that rotation of shaft 36 results in continuous but considerably slower rotation of shaft |62. Pivotally mounted at |26 to a lug |22 of the machine base 36 is a wire shifter |24 which has two arms |26 and |23, carrying a grooved roller |38 and an antifriction roller |32, respectively. Cooperating with the antiiriction roller |32 is a cam disc |36 which is carried by the shaft |82 and adapted to cause oscillation of the wire shifter about its pivotal support so as properly toguide wire or other winding material |36 from a'suitable supply (not shown) into the winding groove 56. the groove of roller |38 is prevented from jumpingsaid groove by means of a retainer blade |38 which is carried by the wire shifter in close proximity to the periphery of the roller as best shown The winding material which runs in Y in Fig. 10. Roller |32 is normally held in engagement with cam disc |35 by means of a tension spring |56 which tends to rock a bellcrank lever |42, pivoted at |44 to bracket 78,

Wire anchoring and coil releasing device C As best shown in Figs. 2a, 3a and 5 the winding member 38 is provided with an oblique groove |56 which merges from, and returns to, the Winding groove 56. This oblique groove |56 is traversed by a slot |52, two opposite walls of which are lined with hardened steel plates |54. Wire severing and anchoring blades |55 are joined by means of a pin |58 and are pivoted at |56 in slot |52 of the winding member 38 (see Fig. 3a). Slot |52 is parallel to the axis of rotation of the winding head A and is considerably deeper and wider than groove |58. Groove |56 which is shallow and rather narrow, receives the wire |36 to be traversed and anchored by the blades |56. Blade |56a is provided with a shearing edge |62 which is adapted to cooperate with a shearing edge |84 of one of the hardened plates |54, and the other blade |565 has two edges v|56 and |68, one above the other and separated by a tooth |16. Edge |66 is dull and is only a bendingedge, while the other edge |68 is a shearing edge.

For an initial coil winding operation, the leading end of the wire as it comes from the wire guide is disposed in the groove |59. The blades |56 at this time are in the dot-and-dash position of Fig. 9 in which the tooth |78 partly traverses the slot so that the Wire rests on said tooth. Upon movement of the blades |56 from the dotand-dash position toward the full line position shown in Fig. 9 by means to be described later, the shearing edges |62 and |54 of blades |55a and plate |54, respectively, cooperate to sever excessive length from the leading end of the Wire, leaving suicient wire length in the slot |52 for the formation' of l,an anchor. This anchor is formed upon continued movement of the blades |56 into the full line position shown in Fig. 5, whereby the dull edge |66 of blade |551) forces the wire end into engagement with the plate |54, i. e. into the dot-and-dash position in Fig. 5. In this manner the leading end of the supplywire is anchored to the winding head A, and upon rotation of the winding head in counterclockwise direction as viewed in Fig. 1, the anchored, leading end of the supply wire is immediately guided into the winding groove 5S of the winding head by the shallow groove |5ii'as can be readily understood. Continued rotation of the winding head A causes the deposition of continuous layers of wire in the winding groove 56 under the control of the previously mentioned wire shifter B. For the actual winding of a coil, the wire shifter is oscillated by the cam |34 only to such an extent as to laterally shift the Wire throughout the width of the winding groove 55a. During the winding of the last layer of a coil, a single cam lobe |74 rocks the wire shifter into the dot-and-dash position in Fig. 1|) in which the wire is shifted out of the Winding groove 58 of the winding headand'into the shallow groove |56, whereby the machine comes to rest just when the wind- Ving head assumes-the position shown in Figs. l,

2a, 3a, and l1, in which theblades |56 are in 75 alignment with a plunger |16, adapted to actuate these blades. In order to understand the following description of the severance of the wound coil from the supply wire and the anchorage of the latter to the winding head, it is to be understood that the blades |56 are immediately returned into the dot-and-dash position in Fig. 9 at the start of the just completed coilwinding operation in a manner to be described later. It is also to be understood that in the dot-and-dash position of blades |56 in Fig. 9 there is sufficient clearance between blade tooth |10 and the corner |12 to permit the dot-anddashed anchor in Fig. 5 to slide deeper into slot |52 and underneath blade tooth |10. Consequently, before the winding head has completed the rst revolution of its just completed coilwinding operation, the anchored supply wire which is kept under slight tension by any suitable tensioning means (not shown) causes the anchor to slide underneath blade tooth |10, i. e. out of the operating region of the anchor bending edge |66 of blade |565. It can now be understood that when the end of the just-wound coil is guided into the shallow groove |50, the anchored start lead of said coil is in cooperative alignment with the cooperating shearing edges |68 and |18 of blade |5613 and plate |54, respectively. Therefore, the machine being stopped after the winding of a coil, the blades |56 are again moved into the full line position shown in Figs. 5 and 9, thereby severing the trailing end of the wound coil from the supply wire due to cooperation of the shearing edges |62 and |64 of blade |56a and plate |54, respectively, anchoring the severed end of the supply wire to the winding head A by the bending edge |66 of blade |561) and severing the start lead of the wound coil from its anchor in slot |52` underneath blade tooth |10 due to cooperation between the shearing edge |68 and |18 of blade |565 and the adjacent plate |54, respectively. Groove |50, where it traverses slot |52, is of such depth that When the anchored end of the coil lead is in engagement with the groove bottom |80, the anchor is in operative alignment with the cooperative shearing edges `|68 and |18 as can be best lseen from Fig. 9. Upon a restart of the machine, the anchored supply Wire is again immediately guided into the Winding groove 56 by the shallow groove |50 and the anchor is forced underneath blade tooth |10 into operative alignment with the shearing edges |68 and |18 so as to clear that part of groove |50 which is above blade tooth |10 for the subsequent reception of the trailing end of the coil being wound. rIhe dot-and-dash line in Fig. 6 represents diagrammatically a wound coil with its starting and trailing leads in that position relative to the blades |56 which they assume at the end of the winding operation and prior to the operation of said blades.

The loop |82 represents the sides, |64 represents the anchored start lead and |86 represents the trailing end, of the Wound coil and also the starting end of the supply wire to be subsequently anchored to the winding head A for the next winding operation.

It has been already explained that at the completion of a winding operation the winding head assumes a position in which the blades |56 are in alignment With the plunger |16,

thereof. As best shown in Fig.' 13, Athis -plunger relative to the follower |90 and may be locked in adjusted position by means of a nut 266. Lever |96 is connected with bar 10 (see Figs. 3a. and V12) by means of suitable links 208 and 2||), so that depression of the foot pedal 12 not only causes a separation of the winding members 30 `and 54 in the earlier explained manner but also a rocking of the lever |96 in clockwise direction as viewed in Fig. 12, whereby the camming surface |94, cooperates with the follower |96 to force plunger |16 to the right as viewed in Figs. 3a and 13, thereby moving the blades |56 from the dot-and-dash position in Fig. 9 to the full line position thereof. A tension spring 2|| returns bar 16, links 2||), 208 and lever |96 with its camming" surface |94 into the position shown in Figs. 3a, 12, and 13, immediately after the operator releases the foot pedal in the depressedk position, shown in dotand-dash lines in Fig. 3a. It is obvious that pin |16 is thereafter immediately forced into the retracted Vposition shown in Figs. 3a and 13 under the compression of spring 204. It is essential that after resumption of operation of the machine, the blades |56 are Withdrawn from the full line position into the dot-and-dash position shown in Fig. 9, before the winding head A completes one revolution, soV as to permit the anchor on the supply wire to be drawn underneath blade tooth |16 in the earlier explainedY manner before the' tension in thevvire becomes ineffective on Vsaid anchor by several wire ydepositions in thewinding groove 56. To accomplish this end,l a cam 2,!2 ismounted on the machine base 30 as best shown in Fig. 1l. Adapted to cooperate with this cam 2|2' duringl the irst revolution of the Winding head in each winding operation are the laterally projectingends 2M of the blades |56 when in the full line or operative position of Figs. 5 and 9. The surfaces 2|6 of said b-lades are then engaged by said cam and are rocked thereby into the retracted, inoperative position shown in dot and dash lines in Fig. 9. The winding head A revolves substan- /tially through three-quarters of a revolution when the blades |56 finally assume the Idot-anddash position in Fig. 9, andthe anchor on theY chor since less than one complete layer YofwireV has been deposited in the winding groove 56.

Machine stopping and restarting device D Referring more particularly to Figs. 2, 3, 12, le, and 15, the control shaft |92 carries a cam 220 which is adapted to cooperate Ywith a rocker' arm 222, pivotally mounted at 22d`to the machineV base 30 and projecting into `an annular groove 226 in the hub 228 of the slidable friction disc |12. A suitably mounted torsion spring 236 normally rocks arm 222 into engagement With Vcam 225.

The ratioin speedbetween the form driving shaft l 36 and-control shaft A|02 is isuchmthat 1 the latter ing head does not immediately come to rest after such disengagement of the clutch, and it is obvious that shaft |02 likewise does not immediately come to rest but is further indexed in spite of the provision of the friction brake 234 which embraces the periphery of cam 220 and is tensioned by means of a screw 235, threaded into a post 238 on the machine base 30 (see Fig. 12). However, to prevent a self-executed restart of the machine due to free rotation of the winding head A and control shaft |02 until the cam lobe 232 has cleared arm 222, rotation of the winding head A is positively stopped while the cam lobe 232 still holds arm 222 in clutch disengaging position. This is accomplished by providing the hub 228 of friction disc 42 with a notch 245 which is adapted to be engaged after clutch disengagement by a stop 242 which is pivotally mounted at 244 to a block 246, bearing against a shock absorber 248 of soft rubber or other suitable material. Blocks 250 and a cover plate 252 retain the bearing block 246 in proper position. More particularly stop 242 is fast on the pivot 244 which has a depending arm 254 terminating in a cam follower 258, adapted to cooperate with a cam 258 on control shaft |02. A tension spring 28|) normally retains follower 258 in engagement with cam 258 and the stop 242 withdrawn from the notch 240. Cam 258 is so angularly relative to cam 220 that the lobe 282 of cam 258 rocks the stop 242 against the face 254 of hub 228 shortly before the notch 240 registers with said stop 242. It can now be understood that immediately after the friction disc 42 is moved slightly against the compression of spring 48 out of driving engagement with pulley 44, stop 242 is forced againstthe hub face 284 until the notch 240 is in registry with said stop, whereupon the latter enters said notch and stops the freely rotating clutch disc 42 together with the winding head A and control shaft |02. This sudden stoppage of the clutch disc 42 naturally results in a shock being transmitted to the stop 242, which shock is taken up by the rubber cushion 248 as can be readily understood. By the time the winding head comes to a forced rest, the cams 258, 220 assume the position shown in Fig. 15, in which their lobes 282 and 232, respectively, are in oper# ative engagement with the follower 235 and arm 222, respectively. It will be noticed from Fig. l5 that upon renewed rotation of control shaft |02 in the direction of arrow 268 in Fig. 15, the follower 256 will clear cam lobe 282 sooner than rocker arm 222 will clear cam lobe 232, wherefore the stop 242 is withdrawn from locking enga-gement with the notched hub 228 before the rocker arm 222 permits reengagement of the friction disc 43 with the pulley 44. It is obvious that the lateral shifting of the wire into the winding groove 55 for a complete coil has to take place during one complete revolution of control shaft |02. The wire shifter actuating ca'rn k|34 therefore has to be designed accordingly.

It is now well understood that the machine is stopped at the conclusion of a winding operation and that the operator thereafter depresses the foot pedal 12 in order to cause a separation of the winding members 38, 54 and to actuate the wire severing and anchoring blades |56. However, after the machine has come to rest and before the operator depresses foot pedal 12, he grips one of the coil sides |0011 in the winding groove 5B by means of any suitable clamp which he introduces into said winding groove through suitable notches 210 in the winding members 33, 54. The operator then depresses foot pedal 12, and by the time winding member 54 has receded from its companion member 38 suciently far to permit the lateral removal of the coil, the severing and anchoring blades 156 have performed their operation and released the coil from the winding form. As already explained, release by the operator of the foot pedal 12 from depressed position causes a reengagement of the winding members 38, 54 and a withdrawal of the bladeactuating plunger |16 into the full line position shown in Fig. 3a. Such withdrawal of plunger |15 is accompanied by movement of the links 208, 2 I0 in the direction of arrow 212 into the position shown in Fig. 12. Such movement of the links 208 is utilized for restarting the machine in a manner to be explained presently. Adjustably secured to the control shaft |62 in any suitable manner is a finger 214 which assumes the angular position shown in Fig. 12 during rest periods of the machine. Pivotally mounted at 216 to the two parallel links 288 (see Figs. 12 and 15) is a lever 218 which is normally urged into the position shown in Fig. le by means of a suitably mounted torsion spring 280. In this position, lateral lugs 282 of lever 218 bear against the parallel links 288 and thus prevent clockwise rotation of said lever beyond the position in Fig. 14. During movement of the links 208 in the direction of arrow 212 in Fig. 12 upon release of the foot pedal by the operator, lever 218, which then assumes the normal position shown in Fig. 14,'engages finger 214 in the position shown in Fig. 12 and rocks the same and the control'shaft |02 into thel position shown in Fig. 14. During such rocking of the control shaft |02 as caused by the lever 218, the cam lobes 262 and 2.12 of the cams 258 and 225, respectively, clear the follower 256 and arm 222, thus restarting the machine by permitting clutch reengagement in the earlier eX- plained manner. During the latter part of a winding operation, the finger 214 reapproaches the lever 218 and rocks the same counterclockwise until it finally assumes the position in Fig. 12 at the end of the winding operation. During the following depression of the foot pedal by the operator, the lever 218 is yieldingly returned into the position shown in Fig. 14 immediately after it clears the finger 214 in the position shown in Fig. 12, thus resetting the lever 218 for a restart of the machine after release of the foot pedal by the operator.

In order to prevent serious damage to certain machine elements by an accidental tripping of the foot pedal 12 by the operator or in any other way while a winding operation is in progress, the foot pedal 12 is positively locked against depression while the machine is in operation. To this end link 14, `which connects the foot pedal 12 with bar 18 is provided with an adjustable lug 298 which has anotch 252. AdaptedV to be received in said notch 292 is one arm 294 of the earlier mentioned bell crank lever .142. This varm 284 is provided with a shoulder 295 which is adapted to bear against the lower surface 298 of lug 298 while the machine is in operation, thus effectively preventing a tripping of the foot pedal '|2 as can be readily understood. Of course shoulder 29E is long enough to remain in engage- -ment with shoulder 298 in spite of the nominal oscillations of the wire shifter B during winding, which oscillations are transmitted to the bell crank lever l? by rod |46 which is in constant yielding engagement with the wire shifter. However, shortly before a winding operation is completed, the wire shifter is swung into the dotand-dash position, shown in Fig. 10, in order to guide the trailing end of a just wound coil into the -groove |50, and this deviation of the wire shifter from its normal region of oscillation is sufficient to cause a rocking of lever |42 into the dot-and-dash position of Fig. 3a, in which the shoulder 236 has no restraining influence on the pedal 12 any more. Of course, immediately after the machine is restarted cam |34 returns the wire shifter to its normal region of oscillation, thereby also permitting lever |42 to return into pedal restraining position, as can be readily understood.

While the embodiment of the present invention as herein disclosed, constitutes a preferred form, it is to be understood that other forms might be adopted, all coming within the scope of the claims which follow.

I claim:

1. In a winding machine having a separable winding form and a wire shifter, the combination of means for causing relative linear movement.

between form and shifter; a manually operable device for separating the form; and mechanism locking the device against manipulation while the shifter and form are within a pre-assigned region of said relative movement.

2. In a winding machine having a separable winding form and a linearly movable wire shifter, the combination of manually operable means for separating the form; and mechanism locking said means against manipulation while the shifter is within a pre-assigned region of its movement relative to the form.

3. In a winding machine having a winding form and a wire shifter, the combination of means for severing the wire between form and shifter; means for causing relative linear movement between form and shifter; a manually operable device for actuating the severing means; and mechanism locking the device against manipulation while the form and shifter are within a .preassigned region of said relative movement.

4. In a winding machine having a winding form and a linearly movable wire shifter, the combination of means for severing the wire between form and shifter; a manually operable device for actuating the severing means; and mechanism locking the device against manipulation while the shifter is within a pre-assigned region of its movement relative to the form.

5. In a winding machine having a winding form and a linearly movable wire shifter, the combination of means for severing the wire between form and shifter; a manually operable device for actuating the severing means; and mechanism locking the device against manipulation while the shifter is within a pre-assigned region of its movement relative to the form.

6. In a winding machine having a separable winding form and a wire shifter, the combination of means for severing the wire between form and shifter; means for causing relative linear movement between form and shifter; a manually operable device for actuating the severing means and separating the form; and mechanism locking, the device against manipulation while the form and shifter are within apreassigned region of said relative movement.

7. In a winding machine having a separable Y winding form and a linearly movable wire shifti er, the combination of means for severing the wire between form and shifter; a manually operable device for separating the form and actu- Yating the severing means; and mechanism locking the device against manipulation while theshifter is. withink a pre-assigned region of Vits movement relative to the form.

8. In a winding machine 'havingV a separable winding form and a linearly movable Wire shifter,

the combination of means for'severng the'wirel between form and shifter; a manually'operable device for separating the form and actuatingthe severing means; and mechanism locking the device against manipulation while the shifter is within a pre-assigned region of its movement completed winding` operation; a manually operable device for rendering the power means effective; and mechanismlocking the device against manipulation while the form and shifter are within a pre-assigned region of said relative linear movement.

10. In a winding machine having a rotatable winding form and a linearly movable wire shifter,

thecombination of powerA means for rotating the form; a controller rendering the power means ineffective upon a completed winding operation; a manually operable `device for rendering the power means effective; and mechanism locking the device against manipulation while theshifter is withinv a pre-assigned region vof its movement relative to the form. v

ll. In a winding machine having a separable winding form and a wire shifter, the combination of power means for causing relative rotation between form and shifter; means for causing relative rlinear movement between form and shifter; a controller rendering the power means ineffective upon a completed winding operation; a manually operable device for separating the form and for rendering the power means effective; and mechanism locking the rdevice against manipulation while the form and shifter are within a pre-assigned region of saidrelative linear movement. Y

12. In a windingv machine having a winding winding form and -a wire shifter, the combinav tion of means for severing the wire b tweenfor 7 and shifter; power means for causing relative rotation between form and shifter; means for causing relative linear movementl between form and shifter; a controller rendering the power means ineifective upon a completed Winding operation; a manually operable device for separating the form and actuating the severing means and rendering the power means effective; and mechanism locking the device against manipulation While the form and shifter are Within a pre-assigned region of said relative linear movement.

14. In a winding machine having a separable winding form and a pivotally mounted wire shifter, the combination of a rotatable cam having portion for rocking the shifter Within a preassigned region for Winding and a portion for rocking the shifter beyond said region; a manually operable device for separating the form; and mechanism actuated by the shifter for locking the device against manipulation While the shifter is within said region, and for releasing the device for manipulation when the shifter moves beyond said region.

15. In a Winding machine having a separable winding form and a pivotally mounted wire shifter, the combination of a rotatable cam having portion for rocking the shifter within a pre-assigned region for Winding and a portion for rocking the shifter beyond said region; means including a foot pedal for separating the form, said pedal having shoulder; and a pivotally mounted lever having a shoulder and being rocked by the shifter such that the lever shoulder engages the pedal shoulder and prevents manipulation of the pedal while the shifter is Within said region, but withdraws from the pedal shoulder when the shifter moves beyond said region.

16. In a Winding machine having a Winding and being deflected from normal position by the passing finger during the latter part of one revolution of the rotary means, said pawl clearing the finger and returning to normal position upon depression of the pedal and rocking the finger upon return of the pedal from depressed position` thereby reengaging the clutch.

17. In a winding machine having a winding form, the combination of means for severing a wound article on the form from the winding material; a normally engaged clutch drivingly connecting the power means with the form; rotary means adapted at the end of a complete revolution to disengage the clutch, said means being rotated by the form at reduced speed and having a depending linger; and mechanism including a foot pedal and a pivotally mounted paWl yieldingly retained in a normal position and movable with the pedal and being deflected from normal position by the passing finger during the latter part of one revolution of the rotary means, de-

v pression of the pedal causing the mechanism to actuate the severing means, and the pawl to clear the finger and return to normal position, and return of the pedal from depressed position causing the pawl to rock the nger thereby reengaging the clutch.

EDWARD W. COLLINS. 

